updated for version 7.3.639

Problem:    It's not easy to build Vim on Windows with XPM support.
Solution:   Include the required files, they are quite small.  Update the
            MSVC makefile to use them.  Binary files are in the next patch.
            (Sergey Khorev)

src/version.c

@@ -719,6 +719,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    639,
 /**/
     638,
 /**/